>>2277650Granite can be tough mostly intrusive bodies I think that get exposed by uplift and erosion? When you do get mineralization it's a hard rock proposition.
Pegmatite formations form in cores of granite bodies, they can give up beautiful stuff. I spent alot of energy chasing tourmaline in southern California at one point in my life, never did any good.... picrel, scraps of green tourmaline, purple lepidolite, smoky quartz, schorl, garnet, from across southern Ca. As close as I ever got to colored tourmaline in the wild.